Fingerprint Recognition Component Wake-up Circuit, Fingerprint Recognition Chip and Electronic Device

Abstract

The present disclosure relates to a fingerprint recognition component wake-up circuit, a fingerprint recognition chip and an electronic device, wherein the circuit includes: a selection module including a plurality of selection units, each selection unit being used to connect a plurality of sensing capacitors in a touch panel in parallel to obtain a sensing unit corresponding to each selection unit; and a wake-up module connected to the selection module, for receiving a sensing signal generated by each sensing unit in response to a touch operation, and waking up the fingerprint recognition component according to the sensing signal of each sensing unit to perform fingerprint collection. The embodiment of the present disclosure can realize waking up the fingerprint recognition component according to the sensing signal of each sensing unit without using an analog-to-digital converter, and has the characteristics of low power consumption, and directly multiplexing the sensing capacitor of the touch panel to realize the wake-up function has the characteristics of low cost, and the embodiment of the present disclosure can use the selection module to adaptively select the sensing capacitor corresponding to each sensing unit, and has high flexibility.

Description

Technical Field

[0001] The present disclosure relates to the field of touch technology, and particularly to a fingerprint recognition component wake-up circuit, a fingerprint recognition chip, and an electronic device. Background Art

[0002] Currently, more and more electronic devices are configured with a fingerprint recognition function for identity authentication. When a fingerprint recognition chip in related technologies is awakened for fingerprint acquisition, it usually adopts a method of scanning a sensing circuit. During the scanning process, an analog-to-digital converter (ADC) is used for analog-to-digital conversion. However, the ADC needs to be driven by a high-frequency clock, which results in high power consumption, wastes battery energy, and reduces the battery life of the electronic device. Summary of the Invention

[0003] According to one aspect of the present disclosure, there is provided a fingerprint recognition component wake-up circuit, the circuit including:

[0004] A selection module, including a plurality of selection units, each selection unit being configured to connect a plurality of sensing capacitors in parallel in a touch panel to obtain a sensing unit corresponding to each selection unit;

[0005] A wake-up module, connected to the selection module, configured to receive sensing signals generated by each of the sensing units in response to a touch operation, and wake up the fingerprint recognition component for fingerprint acquisition according to the sensing signals of each sensing unit.

[0006] In a possible implementation manner, the selection unit includes a plurality of selection switches, a first end of each selection switch is connected to a plurality of sensing capacitors, and a second end of each selection switch is connected to each other.

[0007] In a possible implementation manner, the wake-up module includes:

[0008] A first control unit, connected to an output end of each selection unit, configured to generate a judgment signal according to each sensing signal;

[0009] A second control unit, connected to the first control unit, configured to output a wake-up signal to wake up the fingerprint recognition component for fingerprint acquisition when the judgment signal is valid.

[0010] In a possible implementation manner, the first control unit includes a plurality of voltage conversion units, a plurality of comparison units, and a judgment unit, wherein,

[0011] Each voltage conversion unit is configured to receive a sensing signal of a corresponding sensing unit, and perform voltage conversion on the sensing signal to obtain a converted voltage;

[0012] Each comparison unit is configured to compare the converted voltage with a reference voltage to obtain a comparison result;

[0013] The determination unit is connected to the output terminals of the respective comparison units, and is configured to output the valid determination signal when the comparison result output by any one of the comparison units indicates that the converted voltage is higher than the reference voltage.

[0014] In a possible implementation manner, the determination unit includes an OR logic operation unit.

[0015] In a possible implementation manner, the second control unit is further connected to the selection module, and is configured to output a switch control signal to select the sensing capacitances of the respective sensing units from the capacitance array of the touch panel, and connect the selected multiple sensing capacitances in parallel.

[0016] Wherein, the number of sensing capacitances of the respective sensing units may be the same or different.

[0017] In a possible implementation manner, the second control unit is configured to determine the sensing capacitances included in the respective sensing units according to the user's historical touch data, and generate corresponding switch control signals.

[0018] In a possible implementation manner, the touch panel includes a capacitive fingerprint recognition panel, and the capacitive fingerprint recognition panel may include a sensing capacitance array, and the sensing capacitance array includes N×M sensing capacitances, where N and M are both positive integers.

[0019] According to one aspect of the present disclosure, there is provided a fingerprint recognition chip, and the chip includes the fingerprint recognition component wake-up circuit as described above.

[0020] According to one aspect of the present disclosure, there is provided an electronic device, and the electronic device includes the fingerprint recognition chip as described above.

[0021] In a possible implementation manner, the electronic device includes a display, a smart phone or a portable device.

[0022] In the embodiments of the present disclosure, multiple sensing capacitances in the touch panel are connected in parallel through a selection unit to obtain a sensing unit corresponding to each selection unit, and a wake-up module receives the sensing signals generated by the respective sensing units in response to a touch operation, and wakes up the fingerprint recognition component according to the sensing signals of the respective sensing units to perform fingerprint acquisition on the touch panel. It is possible to wake up the fingerprint recognition component according to the sensing signals of the respective sensing units without using an analog-to-digital converter, which has the characteristic of low power consumption. Moreover, directly reusing the sensing capacitances of the touch panel to implement the wake-up function has the characteristic of low cost. Additionally, the embodiments of the present disclosure can adaptively select the sensing capacitances corresponding to the respective sensing units by using the selection module, which has high flexibility.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the present disclosure. Other features and aspects of the present disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Description of the Drawings

[0024] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification. These drawings show embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solutions of the present disclosure.

[0025] Figure 1 Shows a fingerprint recognition component wake-up circuit according to an embodiment of the present disclosure.

[0026] Figure 2 Shows a schematic diagram of a sensing unit according to an embodiment of the present disclosure.

[0027] Figure 3 Shows a schematic diagram of a sensing unit according to an embodiment of the present disclosure.

[0028] Figure 4 Shows a schematic diagram of the configuration of a sensing unit according to an embodiment of the present disclosure.

[0029] Figure 5 Shows a schematic diagram of a fingerprint recognition component wake-up circuit according to an embodiment of the present disclosure.

[0030] Figure 6 Shows a block diagram of an electronic device according to an embodiment of the present disclosure.

[0031] Figure 7 Shows a block diagram of an electronic device according to an embodiment of the present disclosure. Detailed Embodiments

[0032] The following will detail various exemplary embodiments, features, and aspects of the present disclosure with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0033] In the description of the present disclosure, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present disclosure.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, "a plurality of" means two or more unless otherwise specifically defined.

[0035] In the present disclosure, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0036] The term "exemplary" used herein means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior or better than other embodiments.

[0037] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" in this article means any one of a plurality or any combination of at least two of a plurality. For example, including at least one of A, B, and C may mean including any one or more elements selected from the set composed of A, B, and C.

[0038] In addition, for better illustration of the present disclosure, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present disclosure can be implemented without some specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail so as to highlight the gist of the present disclosure.

[0039] Please refer to Figure 1 , Figure 1 which shows a fingerprint recognition component wake-up circuit according to an embodiment of the present disclosure.

[0040] As Figure 1 shown, the circuit includes:

[0041] A selection module 10, including a plurality of selection units (not shown), each selection unit is used to connect a plurality of sensing capacitors 21 in the touch panel 2 in parallel to obtain a sensing unit corresponding to each selection unit;

[0042] The wake-up module 20 is connected to the selection module 10 and is configured to receive the sensing signals generated by each of the sensing units in response to a touch operation, and wake up the fingerprint recognition component 3 according to the sensing signals of each sensing unit for fingerprint collection.

[0043] In the embodiment of the present disclosure, the selection unit is used to connect multiple sensing capacitors in parallel in the touch panel to obtain sensing units corresponding to each selection unit, and the wake-up module receives the sensing signals generated by each of the sensing units in response to a touch operation, and wakes up the fingerprint recognition component according to the sensing signals of each sensing unit to perform fingerprint collection on the touch panel. It is possible to wake up the fingerprint recognition component according to the sensing signals of each sensing unit without using an analog-to-digital converter, which has the characteristics of low power consumption. Moreover, directly reusing the sensing capacitors of the touch panel to implement the wake-up function has the characteristic of low cost. Additionally, the embodiment of the present disclosure can adaptively select the sensing capacitors corresponding to each sensing unit by using the selection module, which has high flexibility.

[0044] In a possible implementation manner, the touch panel may include a capacitive fingerprint recognition panel. The touch panel may include a sensing capacitor array, and the sensing capacitor array includes N×M sensing capacitors, where N and M are both positive integers. In one example, when a user touches a sensing capacitor, the voltage of the corresponding sensing capacitor will change.

[0045] In a possible implementation manner, the touch panel may further include a display panel. By splicing the capacitive fingerprint recognition panel and the display panel to form a touch panel and setting it on an electronic device, the capacitive fingerprint recognition panel and the display panel can share resources such as clock lines to achieve resource reuse. Of course, in some embodiments, the capacitive fingerprint recognition panel may be separately set on the electronic device.

[0046] In one example, the display panel may include any one or more of an LCD (Liquid Crystal Display) display panel, an LED (Light Emitting Diode) display panel, a MiniLED (Mini Light Emitting Diode) display panel, a MicroLED (Micro Light Emitting Diode) display panel, an OLED (Organic Light-Emitting Diode) display panel, etc.

[0047] The embodiments of the present disclosure do not limit the number of sensing capacitors in each sensing unit, and those skilled in the art can set it according to needs. In one example, the embodiments of the present disclosure can configure the number of sensing capacitors in each sensing unit and the specific sensing capacitors included through a selection module in real time to adapt to different environments and different requirements.

[0048] In a possible implementation manner, the selection unit includes a plurality of selection switches. The first ends of the selection switches are connected to a plurality of sensing capacitors 21, and the second ends of the selection switches are connected to each other.

[0049] In one example, the selection switch can be a selection switch obtained based on a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), an Insulated Gate Bipolar Transistor (IGBT), or other transistors.

[0050] Please refer to Figure 2 , Figure 2 which shows a schematic diagram of a sensing unit according to an embodiment of the present disclosure.

[0051] In one example, as Figure 2 shown, the embodiments of the present disclosure can use the selection module to select 4 sensing capacitors (C(1) to C(4)) to obtain 4 sensing units respectively, that is, each sensing unit includes 1 sensing capacitor.

[0052] Please refer to Figure 3 , Figure 3 which shows a schematic diagram of a sensing unit according to an embodiment of the present disclosure.

[0053] In one example, as Figure 3 shown, the embodiments of the present disclosure can use the selection module to select 16 sensing capacitors {C(1), C(2), C(3), C(4), C(5), C(6), C(7), C(8)} and {C(9), C(10), C(11), C(12), C(13), C(14), C(15), C(16)} to obtain 2 sensing units respectively, that is, each sensing unit includes 8 sensing capacitors. Exemplarily, as Figure 3As shown, the sensing capacitors of the two sensing units are in the same column. After the sensing capacitors of each sensing unit are selected by the selection module, they are connected in parallel. For example, in the sensing unit composed of sensing capacitors {C(1), C(2), C(3), C(4), C(5), C(6), C(7), C(8)}, if the user touches the area where the sensing capacitors {C(1), C(2), C(3), C(4), C(5), C(6), C(7), C(8)} are located, then the sensing unit obtains the sensing signal output by the parallel connection of the sensing capacitors {C(1), C(2), C(3), C(4), C(5), C(6), C(7), C(8)}. In this way, the signal volume can be increased and the detection accuracy can be improved.

[0054] The embodiments of the present disclosure do not limit the number of sensing capacitors of each sensing unit. The number of sensing capacitors of each sensing unit can be one or multiple. Moreover, the positions of the multiple sensing capacitors of each sensing unit can be arbitrary, and the embodiments of the present disclosure do not limit this.

[0055] Please refer to Figure 4 , Figure 4 which shows a schematic diagram of the configuration of the sensing unit according to an embodiment of the present disclosure.

[0056] In one example, as Figure 4 shown, the switch module 40 can select the corresponding sensing switch according to the input switch control signal to form the corresponding sensing unit. Exemplarily, the switch control signal can include the first switch control signal S1 and the second switch control signal S2. The sensing capacitors in the corresponding sensing unit are determined jointly by the first switch control signal S1 and the second switch control signal S2. Exemplarily, when both the first switch control signal S1 and the second switch control signal S2 are in the effective state, the corresponding sensing capacitor is selected.

[0057] In a possible implementation manner, the embodiments of the present disclosure can select the sensing capacitors in the corresponding area based on the area where the user habitually touches to form a sensing unit. For example, the touch habit area of the user can be determined according to the collected historical touch data, and the second control unit is used to generate the corresponding switch control signal to select the sensing capacitors in the corresponding area for parallel connection. In this way, the wake-up success rate can be increased, and personalized configuration can be realized, which can improve the user experience.

[0058] In one example, for different devices and different users, they have different touch habits. During the process of the user using the electronic device, the embodiments of the present disclosure can store the area information of the user's habitual touch in the storage module. Based on a large amount of data accumulation, the embodiments of the present disclosure can obtain accurate data to improve the judgment success rate.

[0059] In one example, the storage module may include a computer-readable storage medium, which may be a tangible device that can hold and store instructions used by an instruction execution device. The computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (non-exhaustive list) of the computer-readable storage medium include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), programmable read-only memory (PROM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanically encoded devices, such as punch cards or raised structures in grooves storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage medium used herein is not construed as an instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagated through a waveguide or other transmission medium (e.g., optical pulses through an optical fiber cable), or electrical signals transmitted through wires.

[0060] Please refer to Figure 5 , Figure 5 which shows a schematic diagram of a fingerprint recognition component wake-up circuit according to an embodiment of the present disclosure.

[0061] In a possible implementation manner, as Figure 5 shown, the wake-up module 20 may include:

[0062] A first control unit 210, connected to the output ends of each selection unit (not shown), for generating a judgment signal EN0 according to each sensing signal;

[0063] A second control unit 220, connected to the first control unit 210, for outputting a wake-up signal EN1 to wake up the fingerprint recognition component 3 for fingerprint collection when the judgment signal EN0 is valid.

[0064] In the embodiment of the present disclosure, the wake-up module generates a judgment signal according to each sensing signal, and outputs a wake-up signal when the judgment signal EN0 is valid to wake up the fingerprint recognition component for fingerprint collection, which can reduce power consumption.

[0065] In a possible implementation manner, as Figure 5 shown, the first control unit 210 may include a plurality of voltage conversion units 2110, a plurality of comparison units 2120, and a judgment unit 2130, wherein,

[0066] Each voltage conversion unit 2110 is configured to receive the sensing signal of the corresponding sensing unit, and perform voltage conversion on the sensing signal to obtain a converted voltage;

[0067] Each comparison unit 2120 is configured to compare the converted voltage with a reference voltage Vref to obtain a comparison result;

[0068] The determination unit 2130 is connected to the output ends of the respective comparison units 2120, and is configured to output the valid determination signal EN0 when the comparison result output by any one of the comparison units 2120 is that the converted voltage is higher than the reference voltage Vref.

[0069] In one example, one conversion unit, one comparison unit, and one sensing unit correspond to each other. The sensing signal output after the sensing capacitors in the sensing unit are connected in parallel is converted by the voltage conversion unit to obtain a converted voltage. The comparison unit compares the converted voltage with a preset reference voltage to obtain a comparison result. If the converted voltage is higher than the reference voltage, the determination unit outputs a valid determination signal EN0, so that the second control unit 220 outputs a wake-up signal to wake up the fingerprint recognition component.

[0070] The present disclosure embodiment does not limit the specific magnitude of the reference voltage. The reference voltage can be obtained based on experience. When the converted voltage is higher than the reference voltage, it can be considered that the user's finger touches the touch panel and the fingerprint recognition function is required. Therefore, the present disclosure embodiment generates a wake-up signal to wake up the fingerprint recognition component.

[0071] In one example, the voltage conversion unit 2110 may include a voltage converter, which can convert the induced charge of the sensing unit into a voltage. The present disclosure embodiment does not limit the specific implementation manner of the voltage conversion unit 2110.

[0072] In one example, the comparison unit 2120 may include a comparator.

[0073] In a possible implementation manner, the determination unit 2130 includes an OR logic operation unit (OR).

[0074] In a possible implementation manner, the second control unit 220 is further connected to the selection module 10, and is configured to output switch control signals S (including a first switch control signal S1 and a second switch control signal S2) to select the sensing capacitors 21 of each sensing unit from the capacitance array of the touch panel 2, and connect the selected multiple sensing capacitors 21 in parallel.

[0075] Wherein, the number of sensing capacitors 21 of each sensing unit is the same or different.

[0076] In a possible implementation, the second control unit 220 may include a processing component, which may include, but is not limited to, a single processor, discrete components, or a combination of a processor and discrete components. The processor may include a controller in an electronic device that has the function of executing instructions, and the processor may be implemented in any suitable manner. For example, it may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components. Inside the processor, the executable instructions may be executed through hardware circuits such as logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers.

[0077] The second control unit 220 may generate a wake-up signal with reference to related technologies, and the embodiments of the present disclosure do not limit this.

[0078] The fingerprint recognition component wake-up circuit according to the embodiments of the present disclosure may be applied in an electronic device, where the electronic device may be provided as a terminal, a server, or other forms of devices.

[0079] Figure 6 A block diagram of an electronic device according to an embodiment of the present disclosure is shown. For example, the electronic device 800 may be a terminal such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0080] Referring to Figure 6 , the electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0081] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, telephone call, data communication, camera operation, and recording operation. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0082] The memory 804 is configured to store various types of data to support the operation of the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, and the like. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0083] The power supply component 806 provides power to various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.

[0084] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of the touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0085] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) that is configured to receive external audio signals when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

[0086] The I / O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to: a home button, a volume button, a power-on button, and a lock button.

[0087] The sensor assembly 814 includes one or more sensors for providing status assessments of various aspects for the electronic device 800. For example, the sensor assembly 814 can detect the on / off state of the electronic device 800, the relative positioning of components, such as the display and keypad of the electronic device 800. The sensor assembly 814 can also detect a change in the position of the electronic device 800 or a component of the electronic device 800, the presence or absence of user contact with the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 can also include a light sensor, such as a complementary metal-oxide semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0088] The communication component 816 is configured to facilitate communication between the electronic device 800 and other devices in a wired or wireless manner. The electronic device 800 can access a wireless network based on communication standards, such as a wireless local area network (WiFi), a second-generation mobile communication technology (2G), or a third-generation mobile communication technology (3G), or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0089] In an exemplary embodiment, the electronic device 800 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-described method.

[0090] In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as a memory 804 including computer program instructions, which can be executed by a processor 820 of the electronic device 800 to complete the above-described method.

[0091] Figure 7 A block diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0092] For example, the electronic device 1900 can be provided as a server. Referring to Figure 7 , the electronic device 1900 includes a processing component 1922, which further includes one or more processors, and memory resources represented by a memory 1932 for storing instructions executable by the processing component 1922, such as application programs. The application programs stored in the memory 1932 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above-described method.

[0093] The electronic device 1900 may also include a power component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input / output (I / O) interface 1958. The electronic device 1900 may operate based on an operating system stored in the memory 1932, such as the Microsoft server operating system (Windows Server TM ), the graphical user interface-based operating system launched by Apple Inc. (Mac OS X TM ), the multi-user and multi-process computer operating system (Unix TM ), the free and open-source Unix-like operating system (Linux TM ), the open-source Unix-like operating system (FreeBSD TM ) or the like.

[0094] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the embodiments disclosed herein.

Claims

1. A fingerprint recognition component wake-up circuit, characterized in that, the circuit includes: A selection module, including a plurality of selection units, each selection unit is used to connect a plurality of sensing capacitors in parallel in the touch panel to obtain a sensing unit corresponding to each selection unit. The touch panel includes a display panel and a capacitive fingerprint recognition panel, and the capacitive fingerprint recognition panel shares the clock line resource with the display panel; A wake-up module, connected to the selection module, is used to receive the sensing signals generated by each sensing unit in response to a touch operation, and wake up the fingerprint recognition component according to the voltage magnitudes corresponding to the sensing signals of each sensing unit to perform fingerprint acquisition, The wake-up module includes: a first control unit, connected to the output ends of each selection unit, for generating a judgment signal according to each sensing signal; a second control unit, connected to the first control unit, for outputting a wake-up signal to wake up the fingerprint recognition component to perform fingerprint acquisition when the judgment signal is valid, The second control unit is further connected to the selection module for: Determining the sensing capacitors included in each sensing unit according to the user's historical touch data, and generating corresponding switch control signals; Outputting the switch control signals to select the sensing capacitors of each sensing unit from the capacitor array of the touch panel, and connecting the selected multiple sensing capacitors in parallel. The number of sensing capacitors of each sensing unit is the same or different.

2. The circuit according to claim 1, characterized in that, The selection unit includes a plurality of selection switches, the first end of each selection switch is connected to a plurality of sensing capacitors, and the second ends of each selection switch are connected to each other.

3. The circuit according to claim 1, characterized in that, The first control unit includes a plurality of voltage conversion units, a plurality of comparison units and a judgment unit, wherein, Each voltage conversion unit is used to receive the sensing signal of the corresponding sensing unit, and perform voltage conversion on the sensing signal to obtain a converted voltage; Each comparison unit is used to compare the converted voltage with a reference voltage to obtain a comparison result; The judgment unit is connected to the output ends of each comparison unit, and is used to output the valid judgment signal when the comparison result output by any one of the comparison units is that the converted voltage is higher than the reference voltage.

4. The circuit according to claim 3, characterized in that, The judgment unit includes an OR logic operation unit.

5. The circuit according to claim 1, characterized in that, The capacitive fingerprint recognition panel may include a sensing capacitor array, and the sensing capacitor array includes N×M sensing capacitors, where N and M are both positive integers.

6. A fingerprint recognition chip, characterized in that, The chip includes the fingerprint recognition component wake-up circuit according to any one of claims 1 to 5.

7. An electronic device, characterized in that, The electronic device includes the fingerprint recognition chip according to claim 6.

8. The electronic device according to claim 7, characterized in that, The electronic device includes a display, a smart phone or a portable device.

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